Improved driving-pipe for oil-wells



GEO. L. KINGUYOF PHILADELPHIA, PENNSYLVANIA.

IMPROVED EllilVlNG-PIPE FUR GIL-WELLS Specilcation forming part ofLetters Patent No. 5.i ,'dated October 9, 1856.

To all fio-hom it may concer Be it known that I, GEORGE L. KING, oft-lie city and county of Philadelphia, and State ot' Pennsylvania, haveinvented a new and useful Improvement in Driving-Pipes for Surfacing inOil, Salt, and Vater vVells5 and I do hereby declare that the followingis a full and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

The nature of my invention and improvenient consists, in thefirst place,in the use of wroughtvirou driving-pipes -t'or surfaciiig in oil, salt,and water wells, in the second place, in combining a shoe or cutter ofwrought'iron laid with steel with the forward or lower end of the pipe,in the third place, in connecting the sections ofthe pipe by means ofthinibles screwed on their adjoining ends to give increased strengththereto; and in the fourth place, in strengthening the pipe by means ofbands shrunk thereon, which bands, the thimbles, and the shoe are turnedotf of the same diameter, so as to give a straight surface to theexterior of the combined pipe, to insure its being driven in a straightline, thereby requiring less force to drive it than. if it took acrooked course, and making the drawing of it practicable, if desired, bythe failing ol" the well or for other reasons.

Hitherto driving-pipes have been made ot' east-iron, on aecounto'l:lthe. great tendency of wrought-iron to bend and take a crooked course,thus requirin g increased force to drive them, and making it difficultto draw the-iii when they have to be taken up.

In the aecoinpanying drawings, Figure l is a vertical section ofthelower joint of the pipe, with the shoe or cutter combined therewith.Fig. 2 is a perspective view of the slice or cutter A.

Like letters in both the'ligures indicate the same parts.

A is the shoe or cutter on the forward or lower end of the pipe l5, asseen in Fig. i. It is shown detached -from the pipe in 2.

rlhe main body of the shoe I construct of wrought-iron, having only thecutting part of steel, which is laid or welded on the iron. Thecutting-edge is formed by means et.' a bevel, a, on the inside, so as tomake a clean eut for the free passage of the pipe.

In the upper end of the shoe there is a rab bet, b, in which ascrew-thread is cut to receive a male screw on the lower end of theiirst section ofthe pipe B.

The end or lower and horizontal surface of the rabbet is a squareabutment for the lower end ofthe pipe, to give great resistin power.

On the upper end of the section ofthe pipe a similar thread is cut tothe one on the lower end, and the thinible C is screwed thereon toone-halt' its depth. The remaining portion is for the reception of thelower end of the next section of the pipe, which is butted squarely tothe end of the first section, so as to give great resistance when thepipe is driven, and to take the strain oftl of the screw'threads.

There are wrought-iron bands D shrunk upon the pipe, which have a squareabutment to each other, and the end ones butt square against thethiinble and shoe, respectively, the end of the shoe outside of therabbet l) being equal to the thickness of the band. I turn the ends ofthe thimbles, ends of the sections B ofthe pipe, the outer ends ofthestrengthening-bands and joint end, and rabbet of the cutter, square, sothat when the several parts are screwed together the strain is taken offof the screw-threads.

The ou ter peripheries ot the shoe, bands, and thinible are turned oft'of equal diameter, so as to make the pipe perfectly straight on itssurface, and thereby insure its being driven in a straight line. Thediameter of the cutter at the cuttin g-ed ge maybe a tritle larger thanthe pipe, to allow the latter a free passage.

The great strength given to the pipe by means of its square abutineiits,strengthening thiinbles and bands, adapts it to being driven into andamong bowlders.

rihe length ot' the pipe is increased to suit the required depth of thewell by additional sections, connected by means of thimbles, asdescribed above, the sections being all strengthened by means ofthebands D. NVhen circuinstances justify it, there may be spaces leftbetween the strengthening-bands.

In ease of the pipe having to be withdrawn when it runs crooked or whenthe well proves a failure, the tliiinbles which connect the sections ot'the pipe so strengthen them as to prevent their being burst by action ofthe withdrawing-tool.

Having thus fully described my improvement in. driving-pipes lfor oil,salt, and Warter Wel1s,wh2tt I claim therein as new, and desire tosecure by Letters Patent, is-

1. The Combination of the inner pipe, B, strengthening-bands D, andthiinbles C, the several parts bein g constructed and arranged,

n-relation to each other, substantially in the manner hereinbeforedescribed and for the purpose specified.

2. The combination of the shoe or cutter A with the lower end of thepipe B and lower strengthening-band' D, substantially in the mannerdescribed und for the purpose above set forth. v

In testimony that tbe above is my invention I have hereunto set my handand afixed my Seal this 16th dayOf July, 1866.

GEORG-E L. KING. [13. s] lVitnesses'.

YV. E. BENSON S. L. KING.

